h1 {
    text-align: center;
}

.sales-table {
    width: 600px;
    margin: 0 auto;
    border-collapse: collapse;
    border: 2px solid pink;
}

.sales-table th, .sales-table td {
    border: 1px solid pink;
    padding: 10px;
    text-align: center;
}

.sales-table tfoot td {
    background-color: #d9edf7;
}